XFINITY Games is a new service (currently in Beta) from Comcast, powered by EA, that lets you stream EA games over your Comcast network. Use your smartphone or tablet paired with your X1 box (not to be confused with an Xbox One) to play Monopoly, Plants vs Zombies, NBA Jam, and Fifa 13.
Or, you know, just buy a console. Or even a PC. The service is designed to utilize "what you already have" as long as you have an X1 cable box and a compatible phone.